I wouldn’t say I’ve regretted buying anything as such, but I’ve lost count of the amps cabs and basses I’ve had, lots of them were my fault for not doing any research and just buying what I liked the look of, whichever basses I bought I always went back to a fender jazz or precision, so I now know exactly what’s good for me, and of all the amps I’m settled on the Ampeg sound, it’s all a learning experience and if you don’t try these things you’ll never know